The general rule is that the initial care plan for a patient is:

A. Developed by an RN:

This option suggests that an RN (Registered Nurse) is solely responsible for creating the initial care plan. While nurses significantly contribute to the care plan, it is often a collaborative effort involving various healthcare professionals, including doctors, nurses, and other specialists.
B. Completed on the day of admission:

This choice means that the initial care plan, outlining the patient's immediate healthcare needs and interventions, is developed and documented on the day the patient is admitted to the healthcare facility. It's essential to establish a plan promptly to ensure the patient receives appropriate and timely care.
C. Used as the basis of care throughout a hospital stay without alteration:

This option suggests that the initial care plan remains unchanged throughout the patient's hospital stay. However, healthcare plans need to be dynamic, adapting to the patient's evolving condition. Care plans are continuously assessed and modified based on the patient's response to treatments and interventions.
D. Developed by the primary care provider and incorporated into the nursing care:

This choice implies that the initial care plan is created by the primary care provider (which could be a doctor) and then integrated into the nursing care. While doctors provide medical diagnoses and orders, nurses play a crucial role in implementing and coordinating the care plan, ensuring the patient's needs are met.